CODEWITHSUNDEEP
rubyinputkeypress
Bernd
Bernd

Reputation: 11493

Handle single character user input without pressing enter

I am writing a tiny interactive command line tool prompting the user to press a numeric key. It should continue directly after the first key press/input.

Currently I am doing this to capture the user's input

puts "yes, please ..."
gets.chomp

... however this requires pressing "enter" to confirm the input. How can return the input value right after the first key press?

Upvotes: 1

Views: 700

Answers (1)

Patrick Oscity
Patrick Oscity

Reputation: 54684

Try something like this:

puts 'Do you want to proceed? y/n'

loop do
  system("stty raw -echo")
  c = STDIN.getc
  system("stty -raw echo")

  case c
  when 'y'
    puts 'Yes'
    break
  when 'n'
    puts 'No'
    break
  else
    puts 'Please type "y" or "n"'
  end
end

Upvotes: 1

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